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very pretty good
Crystal 32
74HC157 is a high-speed multiplexer integrated circuit consisting of four 2-inputs digital multiplexers inside the chip
Material : glass fiber FR4
Dc 0 To 25v Voltage Sensor Module pcb repair tools very pretty goodVoltage Detection Sensor Module 25V module is based on the principle of resistive voltage divider design, it can make the red terminal connector input voltage to 5 times smaller. Arduino analog input voltages up to 5 v. The voltage detection module input voltage not greater than 5Vx5=25V (if using 3. 3V systems, input voltage not greater than 3. 3Vx5=16. 5V). It has the limit of Arduino analog input 5 VDC only. So if you wish to measure higher
